Frank a



(No Model.)

F. A. GURNEY.

KEY. No. 365,304. y Patented June 21, 1887.

Wz'zn es@ 9.5.- In Ventan- UNITED STATES PATENT OFFICE.

FRANK A. GURNEY, OF GRAND CROSSING, `ASSIGNOR TO GARY G. CALKINS, OF CHICAGO, ILLINOIS.

SPECFICATION forming part of Letters Patent No. 365,304, dated June 21, 1887.

Application filed October 26, 1836. Serial No. 217,919. ,(No model To @ZZ-whom it may concern.-

Beit known that I, FRANK A. GURNEY, of Grand Crossing, in the county of Cook and State ofIllinois, haveinvented certain new and useful Improvements in Keys; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form Ic a part of this specification.

This invention relates to keys of that class in which the main part of the key, consisting of the shank, the ring, and the bit, is stamped from sheet metal, and in which the eylindric i5 part or barrel, which enters and turns in the lock, is made of a separate piece and secured to the sheet-metal part.

Thelobject of the invention is to providev an improved means of construction in the parts 2o of keys of, this character, whereby said parts may be cheaply and readily made and secured together; and theinvention consists in the matters hereinafter described, and pointed out in the appended claims.

The key herein shown as illustrating my invention consists of a sheet-metal part or blank forming the shank, rink, and bit, and a cy- Y v lindrical part or barrel,which is slotted longi-V tudinally through the greater part of its length, 3o so as to form two forksA or arms, which are adapted to it against the sides of that part of the sheet-metal blank adjacent to the bit, the said barrel and the blank being provided at theinner end of the slot in the barrel with in- 3 5 terfitting recesses and projections adapted to hold the parts from relative movement atthe end of the key-shank remote from the ring. The ends of the side portions or forks of the slotted barrel are secured to the blank by 4o means of Ian aperture formed in the sheet-metal blank at a point adjacent to the endsQof the forks of the barrel, into which aperture the end portions of said forks, which are suitably shaped for the purpose, are bent or punched, thereby affording a simple and strong fastening without the employment of rivets or solder.

The invention may be more readily understood by reference to the accompanying drawings, in whichn 5o Figure 1 is a side View of a key constructed as proposed by me. Fig. 2 is a side or face view, and Fig. 3 an edge View, of the sheetmetal blank forming one part of the key. Fig. 4 is a section taken upon line a: :c of Fig. 5,

4and Fig. 5 is a sideviewof the cylindric part 55 or barrel of the key. Fig. 6 is a longitudinal section of the key, taken upon line x x of Fig. 1.

As illustrated in the said drawings, A is a metal part or blank, punched or otherwise formedfrom sheet metal and embracingthekeyshank a, the ring or loop a', and the bit ai, the latter being arranged to form a lateral extension at one side of the shank at the end ofthe latter remote from the ring.

B is the cylindric part or barrel, which is provided with a slot, b, herein shown as cut through the barrel from side to side thereof for a greater part'of its length, so as to form two parallel branches or forks, b b', connected With each other at the projecting end of the 7o .barrel which extends beyond the bit.

The forks of the barrel thus formed are adapted to lit over the part of the blank adjacent to the bit in such manner as to form therewith a solid cylinder adapted to fit and turn in the' 7 5 lock, as clearly shown in Figs. l and 6.

Io provide means for permanently securing toeach other the barrel and the sheet-metal blank made as above described, I form a notch,

a, in the end of the blank A, adjacent to the So bit, and provide the inner end of the slot in the barrel B with a projecting part, b2, adapted to t into or engage the said notch a3, so as to hold the parts frolnrelative movement at this point. I 8 5 For holding the barrel in place upon the blank A, with the notch a3 and projection b2 engaged in the manner described, I preferably provide the blank A with a recess or aperture, a4, at a point opposite the ends of the 9o forks b b of the barrel, and I bend, punch, or otherwise depress or force a part of the metal at the ends of the forks into the said recess or aperture so as to positively hold the barrel from shifting upon the blank. The ends of the said forks b b are preferably made pointed or tapering, as shown, in order to facilitate the bending thereof into the aperture ai, and to give a better finish to the parts at this point.

For the general purpose of my invention, roo

the engaging parts at the inner end of the slot of the barrel-such, for instance, as the notch a and the projection b2, shown-may be shaped in any manner suitable for holding the said parts from relative lateral movement. One desirable form of such engaging parts is shown in the drawings, in which the inner end of the slot b of the barrel B is eut obliquely, as may be conveniently done in the operation of forming the slot, and the notch a3 is made straight upon its side adjacent to the bit and .inclined upon its Opposite side, to correspond with the shape of the end surface of the said slot.

A main feature Of novelty in the key shown is embodied in a construction in which the barrel is provided with a longitudinal slot, and the inner end of the slot and the part of the sheetanctal blank adjacent to the bit are provided With intertting notches and projections ofthe general form illustrated, Operating to hold the barrel from shifting laterally upon the blank at this point, and as far as this part of the invention is concerned the barrel may be permanently held upon the blank at its opposite end in any manner found convenient or desirable. The constructionillustrated, in the means for securing the forked ends of the barrel to the blank, however, presents important advantages in point of simplicity and eheapness, and a key in which the barrel is thus attached is therefore also herein claimed as part of 1ny invention.

I clailn as my inventionl. A key consisting of a sheet-metal blank, forming the shank, ring, and bit, said blank being provided with an aperture, ct, and-a eylindrie part or barrel provided with a slot receiving the adjacent part of the blank, the said barrel being connected with the blank at one end by means of interlocking parts upon the barrel and blank, and at its opposite end by means of parts of the metal of the barrel, o

which are bent inwardly or depressed into the said aperture a", substantially as described.

2. The combination, with a sheet-,metal blank, A, forming the shank, ring, and bit, of a barrel, B, provided With a slot, b, having an oblique surface at its inner end, the said blank being provided with an aperture, a4, con stl-noted to receive the projection formed by the oblique surface of the slot, and means for attaching the said barrel to the blank A at the opposite o1' outer end of the said slot, substantially as described.

In testimony that I claim the foregoing as my invention I affix my signature in presence of two Witnesses.

FRANK A. GURNEY.

\Vitnesses:

C. CLARENCE POOLE, M. E. DAYTON. 

